Single-axis coarse and fine adjustment device provided with medi

Details Single-axis coarse and fine adjustment device provided with medi Single-axis coarse and fine adjustment device provided with medi

1976-08-30

1978-04-11

Henry, Jon W.

Machine element or mechanism

Shaft operators

Plural speed

74 1054, 350 86, F16H 3518, G02B 2126

Patent

active

040832562

ABSTRACT:
A single-axis coarse and fine adjustment device for driving a carriage comprises a pinion shaft rotatably supported by stationary support means and having a pinion meshing with a rack provided on the carriage, a connecting shaft rotatably supported with the pinion shaft and having a first and a second toothed portion, first decelerating gear means meshing with the first toothed portion to decelerate the rotation of the connecting shaft and transmit it to the pinion shaft, a fine adjustment shaft rotatably supported within the connecting shaft and having a toothed portion, a fine adjustment operating member for rotating the fine adjustment shaft, second decelerating gear means meshing with the second toothed portion of the connecting shaft and the toothed portion of the fine adjustment shaft to decelerate the rotation of the fine adjustment shaft and transmit it to the connecting shaft, a medium adjustment operating member rotatably supporting the second decelerating gear means and rotatably supported by the support means so as to impart rotation of equal ratio to the connecting shaft through the second gear means, and a coarse adjustment operating member rotatably supported by the support means so as to impart rotation of equal ratio to the pinion shaft through the first decelerating gear means.

REFERENCES:
patent: 2877651 (1959-03-01), Erbe et al.
patent: 3492059 (1970-01-01), Shio
patent: 3683704 (1972-08-01), Kuroha
patent: 4020705 (1977-05-01), Hayasaka

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